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Marylandoperating inMaryland
Your Home State — your base jurisdiction for weight rules

Maryland

Home State

You are based in Maryland. Interstate GVW: 80,000 lbs.

Interstate GVW
80,000 lbs
Height Limit
13 ft 6 in
Width Limit
8 ft 6 in

Weight Limits

As a carrier based in Maryland, your interstate GVW limit is 80,000 lbs. Per-axle limits: Single axle 20,000 lbs, Tandem axle 34,000 lbs, Tridem axle 42,000 lbs. Federal bridge formula applies; county-specific bridge restrictions.

Size Limits

Height: 13 ft 6 in. Width: 8 ft 6 in. Trailer length: 53 ft (semitrailer). Overall combination length: No overall limit for tractor-semitrailer on National Network.

Oversize/Overweight Permits

Hauling permits through MDOT SHA Motor Carrier Division Fees: Single-trip: $25; Annual: varies by weight and route. Apply online: https://www.roads.maryland.gov/mdotsha/pages/index.aspx?pageid=189 Enforcement: MDSP and SHA enforcement; weigh stations on major corridors; fines per pound overweight.

Exemptions

Agricultural: Agricultural vehicles exempt on county roads.

Official Source

For the most current weight and size regulations, permit applications, and seasonal restriction updates, visit the official Maryland DOT page at https://www.roads.maryland.gov/mdotsha/pages/index.aspx?pageid=189. Contact the Maryland Department of Transportation State Highway Administration for specific routing questions.

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Law last updated: 2025Row last reviewed: Apr 27, 2026

Weight and size limits are subject to change. Always verify current limits on the official state DOT website before travel. Seasonal restrictions, bridge postings, and local ordinances may further reduce allowable weights. Data reflects 2025-2026 regulations where available.